European stocks tumbled on Wednesday, reversing Tuesday's gains, as US tariffs took effect. The Stoxx 600 index dropped 2.55%, with banking, mining, and oil & gas sectors leading the decline. France's CAC 40 fell 2.6%, Germany's DAX 2.1%, and the FTSE 100 2%. Concerns over escalating trade tensions and further tariffs fueled market uncertainty.

Prepared by Christopher Adams and reviewed by editorial team.